On Tue, May 21, 2019 at 06:39:22PM -0700, Andrey Smirnov wrote:

In the case of compat syscall ioctl numbers for UI_BEGIN_FF_UPLOAD and UI_END_FF_UPLOAD need to be adjusted before being passed on uinput_ioctl_handler() since code built with -m32 will be passing slightly different values. Extend the code already covering UI_SET_PHYS to cover UI_BEGIN_FF_UPLOAD and UI_END_FF_UPLOAD as well.

Reported-by: Pierre-Loup A. Griffais pgriffais@valvesoftware.com Signed-off-by: Andrey Smirnov andrew.smirnov@gmail.com Cc: Dmitry Torokhov dmitry.torokhov@gmail.com Cc: linux-input@vger.kernel.org Cc: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org

Applied, thank you.

---

drivers/input/misc/uinput.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c index 1a6762fc38f9..1116d4cd5695 100644 --- a/drivers/input/misc/uinput.c +++ b/drivers/input/misc/uinput.c @@ -1051,13 +1051,24 @@ static long uinput_ioctl(struct file *file, unsigned int cmd, unsigned long arg) #ifdef CONFIG_COMPAT -#define UI_SET_PHYS_COMPAT _IOW(UINPUT_IOCTL_BASE, 108, compat_uptr_t) +#define UI_SET_PHYS_COMPAT _IOW(UINPUT_IOCTL_BASE, 108, compat_uptr_t) +#define UI_BEGIN_FF_UPLOAD_COMPAT _IOWR(UINPUT_IOCTL_BASE, 200, struct uinput_ff_upload_compat) +#define UI_END_FF_UPLOAD_COMPAT _IOW(UINPUT_IOCTL_BASE, 201, struct uinput_ff_upload_compat) static long uinput_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) {

• if (cmd == UI_SET_PHYS_COMPAT)

• switch (cmd) {
• case UI_SET_PHYS_COMPAT: cmd = UI_SET_PHYS;

• break;
  

• case UI_BEGIN_FF_UPLOAD_COMPAT:

• cmd = UI_BEGIN_FF_UPLOAD;
  

• break;
  

• case UI_END_FF_UPLOAD_COMPAT:

• cmd = UI_END_FF_UPLOAD;
  

• break;
  

• }

return uinput_ioctl_handler(file, cmd, arg, compat_ptr(arg)); } -- 2.21.0